Across
- 3. The negative pressure in the chest during _______ draws air into the lungs, and also tends to draw blood into the veins near the heart.
- 4. Veins and venules are ____-walled vessels that contain internal valves which direct blood coming from capillaries back to the heart.
- 7. Blood enters the heart through veins during ______, when ventricles relax and the pressure reduces.
- 8. The heart is a _____ chambered, muscular pump.
- 9. The prime function of values is to control the _____ of blood.
- 11. _______ are microscopically small vessels that receive blood rich in nutrients from arterioles and distribute it to body cells.
- 12. Arteries and arterioles are relatively thick-walled, ____ vessels that transport blood under high pressure away from the heart.
- 15. Small arteries are called __________.
- 16. When the ventricles contract (______), blood pressure increases and blood is forced out the aorta and pulmonary arteries.
- 19. Erythrocytes or red blood cells transport oxygen as _________ from the lungs to body tissues, and carbon dioxide from body tissues to the lungs.
- 20. ______ vessels carry blood to and from all parts of the body, except the lungs.
- 21. Diffusion is driven by ______ gradients between plasma and interstitial fluid, and occurs along the length of the capillary.
- 24. Mammals have two transport systems: the blood circulatory system and the _____ system.
- 28. __________ or white blood cells are fewer in number and neutralise and destroy any foreign protein in the body.
- 30. The cellular part of the blood is produced in cells located in the red bone ____.
- 32. Blood movement through venules and veins is assisted by muscular body movements and _____.
Down
- 1. Arteries carry blood away from the heart, veins carry blood towards the heart, and capillaries are the narrow ______ vessels in between.
- 2. Veins are connected to capillaries via small veins called ___________.
- 5. _____ flows from the lungs through the pulmonary vein into the left atrium of the heart.
- 6. Blood plasma is a fluid composed of ______, products of digestion, waste products, a number of mineral ions and water.
- 7. Exchange between blood plasma and intestinal fluid occurs by _____ across capillary walls.
- 10. Valves are located in the heart and _____.
- 11. The circulatory or ______ system consists of the heart and all the blood carrying vessels leading to and from it.
- 13. Movement of blood from the left ventricle through the body and back to the right atrium is called _____ circulation.
- 14. ______ blood pressure is the most common cardiovascular condition.
- 17. The _______ arteries supply blood to the heart itself.
- 18. The right atrium takes in blood from the body, contracts and forces it into the right ______.
- 22. The blood circulatory system is a ____, transport system.
- 23. ______ are cell fragments that help to clot blood.
- 25. Blood is composed of cells, cell fragments, and a fluid called _______.
- 26. The right ventricle contracts, forcing blood through ____ to the lungs.
- 27. Movement of blood from the right atrium to the lungs and back to the left atrium is called _____ circulation.
- 29. Oxygenated blood is pumped by the left ventricle through the body via the _____.
- 31. The left _____ pushes blood into the into the left ventricle.